CN220313198U - Digital display mechanical torque wrench with communication function - Google Patents
Digital display mechanical torque wrench with communication function Download PDFInfo
- Publication number
- CN220313198U CN220313198U CN202321679988.XU CN202321679988U CN220313198U CN 220313198 U CN220313198 U CN 220313198U CN 202321679988 U CN202321679988 U CN 202321679988U CN 220313198 U CN220313198 U CN 220313198U
- Authority
- CN
- China
- Prior art keywords
- torsion
- digital display
- sleeve
- spring
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 8
- 238000013500 data storage Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000007726 management method Methods 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses a digital display mechanical torque wrench with communication function, which structurally comprises a sleeve, an elastic body, a digital display device, a handle, a ratchet head, a main control circuit board and the like, wherein a strain gauge connected with a circuit board formed by the main control circuit board in a signal manner is attached to the elastic body, and the strain gauge is used for transmitting an analog quantity of the deformation quantity of the elastic body representing the torque change to the main control circuit board to form real-time control; meanwhile, a spring torsion-fixing device is arranged in the sleeve and the handle, the structure of the spring torsion-fixing device comprises a telescopic rod, a torsion-fixing spring and a sliding block, two ends of the torsion-fixing spring are respectively and elastically pushed at the front end of the telescopic rod and the rear end of the sliding block, the front end of the sliding block is in elastic contact with a shifting block at the rear end of an elastic body, and when the handle rotates relative to the sleeve, the telescopic rod can be driven to axially stretch and retract to adjust torsion-fixing elasticity of the torsion-fixing spring; therefore, the improved torque wrench not only integrates the use advantages of a mechanical wrench and a digital display wrench, but also can set and remind the torque value and lock the torque.
Description
Technical Field
The utility model belongs to the technical field of torque wrenches, and particularly relates to a digital display mechanical torque wrench with communication function.
Background
The torque wrench is a very practical pulling installation tool and is mainly used for fastening fasteners such as bolts. In addition, the torque wrench has a very wide application range, for example, the torque wrench can be applied to the installation of automobiles, heavy trucks, rail transit, large-scale instruments and equipment, and the like, and some of the torque wrench can even be applied to the field of military and aerospace.
Currently, torque wrenches in the market are mainly divided into two types of mechanical wrenches and digital display wrenches. The mechanical wrench has the use advantages of convenient operation, high working efficiency and the like, but has the defects of insufficient precision, incapability of displaying the torsion change state in use, incapability of data storage and the like; the digital display spanner can solve the use defects of the mechanical spanner, namely has the advantages of high precision, capability of displaying the torsion change value during use, data storage and the like, and has the defect of complicated use and operation. In addition, the digital display wrench cannot set the torque value and cannot provide real-time reminding when the torque value reaches the set torque, so that a user still pulls hard under the condition of unknowing, and the internal devices of the torque wrench are easy to damage, and the service life is influenced; in addition, the torque value of the digital display wrenches is often changed due to false touch during operation, which also greatly influences the use precision.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the digital display mechanical torque wrench which not only integrates the use advantages of the mechanical wrench and the digital display wrench, but also can set and remind the torque value and lock the torque.
The technical problems of the utility model are realized by the following technical scheme:
the digital display mechanical torque wrench comprises a sleeve, an elastomer in the sleeve, a digital display device outside the sleeve and a handle at the rear part of the sleeve, wherein the front part of the elastomer extends out of the front part of the sleeve and is provided with a ratchet head, a main control circuit board is arranged in the digital display device, a strain gauge is attached to the elastomer and is in signal connection with the main control circuit board to form a circuit, and the strain gauge is used for transmitting an analog quantity of the deformation quantity of the elastomer representing the torque change to the main control circuit board to form real-time control; the sleeve and the handle are internally provided with a spring torsion-fixing device, the spring torsion-fixing device comprises a telescopic rod, a torsion-fixing spring and a sliding block, two ends of the torsion-fixing spring are respectively elastically pushed against the front end of the telescopic rod and the rear end of the sliding block, the front end of the sliding block is in elastic contact with a shifting block at the rear end of an elastic body, and the handle rotates relative to the sleeve and drives the telescopic rod to axially stretch and retract so as to adjust the torsion-fixing elasticity of the torsion-fixing spring.
The front end of the handle is provided with a locking ring which is movably sleeved outside the sleeve, and the locking ring is used for fastening the handle to lock the torsion-fixing elastic force.
The spring torsion-fixing device adjusts the pressure of the torsion-fixing spring to the elastic body and the shifting block through the rotation of the handle, so that a set torsion force is formed, when the torsion force is set in use, the elastic body is disjointed in the process of bending to straightening and resetting, and the shifting block is synchronously driven to rotate by the disjoint phenomenon so as to knock the front end of the contacted sliding block to form a click prompt sound.
The digital display device comprises a shell fixed outside the sleeve, a liquid crystal display screen, keys, a charging interface and a USB port are arranged on the surface of the shell, and a main control circuit board and an internal battery are arranged in the shell.
The main control circuit board is provided with a CPU processor, an A/D conversion module, a storage module, a WIFI module, a battery management module, a USB module, a torsion sensor, a signal amplifier and an LED lamp.
The WIFI module and an external PC form data wireless transmission; the USB module is connected to the PC through a data line to form data wired transmission.
The main control circuit board is provided with a charging interface of an internal battery.
The outer surface of the sleeve and the outer circumferential surface of the front end of the locking ring are respectively provided with scale marks for setting torsion.
Compared with the prior art, the utility model mainly provides a torque wrench which is composed of a sleeve, an elastomer, a digital display device, a handle, a ratchet head, a main control circuit board and the like, wherein a strain gauge is attached to the elastomer of the torque wrench, and the strain gauge is connected with the main control circuit board through a circuit signal, so that the strain gauge can send the analog quantity of the deformation of the elastomer representing the torque change to the main control circuit board to form real-time control; therefore, the torque wrench can integrate the advantages of a mechanical wrench and a digital display wrench through the structural improvement, so that the torque wrench is convenient to use and high in efficiency, and has the advantages of high-precision measurement, real-time display of torque change and automatic data storage of the digital display wrench; meanwhile, a spring torsion-fixing device is additionally arranged in the sleeve and the handle, the spring torsion-fixing device comprises a telescopic rod, a torsion-fixing spring and a sliding block, two ends of the torsion-fixing spring are respectively and elastically pushed against the front end of the telescopic rod and the rear end of the sliding block, the front end of the sliding block and a shifting block at the rear end of the elastic body form elastic contact, and when the handle rotates relative to the sleeve, the telescopic rod can be driven to axially stretch and move to adjust the torsion-fixing elasticity of the torsion-fixing spring, so that the torsion spanner can set and remind a torsion value through the structural design, and can be locked by combining with a locking ring movably sleeved outside the sleeve at the front end of the handle; in addition, through setting up WIFI module and USB module on the master control circuit board, can increase wireless transmission and wired transmission's function, can see output torsion change figure simultaneously when making things convenient for external PC.
Drawings
Fig. 1 is a schematic diagram of the outline structure of the present utility model.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a partial cross-sectional view of fig. 1 (strain gauge and main control circuit board form a circuit signal connection).
Fig. 4 is an overall cross-sectional view of fig. 1 (with the main control wiring board removed).
Fig. 5 is a schematic structural diagram of a main control circuit board.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the drawings. It is apparent that the described embodiments are only some embodiments of the present utility model, not all of which are based on the embodiments of the present utility model, and all other embodiments that a person skilled in the art can obtain without making any inventive effort are also within the scope of the present utility model.
1-5, 1 a ratchet head, 2 a elastomer, 21 a strain gauge, 3 a sleeve, 4 a digital display device, 41 a housing, 42 a liquid crystal display, 43 a key, 44 a LED lamp, 45 a USB port, 5 a locking ring, 6 a handle, 7 a scale mark, 8 a spring torsion device, 81 a torsion spring, 82 a sliding block, 83 a telescopic rod, 9 a shifting block, 10 a main control circuit board, 101 a CPU processor, 102 a/D conversion module, 103 a storage module, 104 a WIFI module and 105 a USB module.
As shown in fig. 1 and 2, the embodiment uses the upper side of the view shown in fig. 1 and 2 as the front part and the lower side as the rear part, the structure of the torque wrench mainly comprises a sleeve 3, an elastic body 2 in the sleeve, a digital display device 4 outside the sleeve, a handle 6 at the rear part of the sleeve and the like, the front part of the elastic body 2 extends out of the front part of the sleeve 3, a ratchet head 1 is arranged at the front part of the sleeve 3, a main control circuit board 10 is arranged in the digital display device 4, and a spring torsion fixing device 8 is arranged in the sleeve 3 and the handle 6.
The elastic body 2 is a torsion force body, the deformation quantity of the elastic body 2 reflects the torsion force, and when the elastic body 2 is deformed under force, the elastic body is technically equivalent to stress and strain, the mathematical formula is explained in Hooke's law, and the relation of stress and strain is that P n =E e ,P s =nφ。
The relationship between the stress tensor and the strain tensor is described in "generalized hooke's law". There is a linear relationship between the two tensors, represented by a fourth-order tensor, called the "generalized elastic modulus"
σ ii =λ(e 11 +e 22 +e 33 )+2ne ii σ ij =2ne ij ，
Lambda: lame modulus, v= |e ii ||e 11 |
n=E 2 (1+v)λ=E v (1+v)(1−2v),a=tr(e ij )
The strain is e= (r+z) dθ -rdθrdθ=zr
Stress is σ=ee=ez/R
The strain gauge 21 is attached to the elastic body 2, the strain gauge is in circuit signal connection with the main control circuit board 10, and an analog quantity of the deformation quantity of the elastic body 2 representing torsion change is sent to the main control circuit board 10 to form real-time control. That is, the deformation of the elastic body 2 causes the resistance of the strain gauge 21 to change, and then the torsion value is displayed by the digital display device 4 through analog-digital conversion and data calculation.
The strain gauge 21 is a very sensitive device, and the resistance value of the strain gauge can be changed due to tiny deformation, so that voltage is connected to two ends of the strain gauge, and then the stress of the elastic body and the torque value applied to the torque wrench can be known through the change of the voltage value.
The principle that the strain gauge depends on a Wheatstone bridge on a torque wrench is as follows:
wherein, K: constant of proportionality
Epsilon: strain of
The digital display device 4 comprises a shell 41 fixed outside the sleeve 3, and a liquid crystal display screen 42, keys 43 and a USB port 45 are arranged on the surface of the shell; the liquid crystal display 42 can display data collected by the main control circuit board 10, set display content and the like, torsion setting, system setting, transmission setting and the like can be performed through the liquid crystal display 42 and the combination of the keys 43, and torsion value units such as N.m, kgf.cm, kgf.m, lbf.in and the like can also be set; the main control circuit board 10 and an internal battery, which is usually a rechargeable battery, are arranged in the housing 41, and can supply power to the main control circuit board 10.
The main control circuit board 10 is integrally provided with a CPU (Central processing Unit) processor 101, an A/D (analog to digital) conversion module 102, a storage module 103, a WIFI module 104, a battery management module, a USB module 105, a torsion sensor, a signal amplifier and an LED lamp 44.
The CPU processor mainly controls each module; the torsion sensor is connected with a clock and data port of the A/D conversion module 102 through a signal amplifier; the a/D conversion module 102 can collect analog data in real time during the operation of the torque wrench, and transmit the acquired signal to the CPU processor 101 after the main control circuit board 10 sends the acquired signal, that is, convert the original analog of the torque value into digital; the storage module 103 is in circuit signal connection with the CPU processor 101 and is mainly used for storing data, namely, the sampled torsion values are stored, and each torsion data can be stored; the WIFI module 104 is connected with the CPU 101 through a serial port, and further forms data wireless transmission with an external PC to obtain various data; the USB module 105 is connected with the CPU processor through a serial port, and is further connected to the PC through a data line to form data wired transmission so as to obtain various data; the battery management module can manage the charge and discharge process of the internal battery, protect the healthy operation of the battery and prolong the service life of the battery; the LED lamp can warn the peak of torsion that the suggestion arrived, usually exposes the setting outside the digital display device 4.
The main control circuit board 10 is also provided with a charging interface of an internal battery, and the charging interface is usually exposed outside the digital display device 4 and can be used for charging the torque wrench by using an auxiliary charger.
The spring torsion-fixing device 8 comprises a telescopic rod 83, a torsion-fixing spring 81 and a sliding block 82, wherein two ends of the torsion-fixing spring 81 are respectively elastically pushed at the front end of the telescopic rod 83 and the rear end of the sliding block 82, the front end of the sliding block 82 is in elastic contact with a shifting block 9 at the rear end of the elastic body 2, so that the handle 6 rotates relative to the sleeve 3, the telescopic rod 83 can be driven to axially stretch and retract, and the torsion-fixing elasticity of the torsion-fixing spring 81 can be adjusted.
The front end of the handle 6 is provided with a locking ring 5 movably sleeved outside the sleeve 3, the handle 6 is fastened by the locking ring to lock the torsion-fixing elastic force, that is to say, the locking ring 5 can perform torsion locking when the mechanical torsion value is regulated so as to prevent the torsion value from changing due to false touch during operation, and the outer surface of the sleeve 3 and the outer circumferential surface of the front end of the locking ring 5 are both provided with scale marks 7 for setting torsion, thereby facilitating the accurate locking of the torsion value.
The spring torsion fixing device 8 rotates through the handle 6 to adjust the pressure of the torsion fixing spring 81 to the elastic body 2 and the shifting block 9, so that set torsion is formed, namely the torsion is adjusted to a required torsion value through the handle 6, the torsion value is locked through the locking ring 5, meanwhile, the digital display device 4 is opened to conduct fastening operation of a torsion wrench, the elastic body 2 is disconnected in the process of bending to straightening and resetting until the fastening operation reaches the set torsion, the shifting block 9 is synchronously driven to rotate by the disconnection phenomenon to strike the front end of the sliding block 82 which is contacted with the elastic body, so that click prompt sound is formed, the preset torsion value is reached, and no larger torsion is required to be applied; at the same time, the accurate torque peak value is displayed on the liquid crystal display 42, if the peak value range is set, the LED lamp 44 also blinks to prompt, and when the limit value is not set, the torque wrench only displays the torque value in real time.
After the required test data are obtained, the result can be checked through the liquid crystal display screen 42, and the test data can be transmitted to the PC for checking by using the WIFI or USB function carried by the equipment.
The torque wrench can integrate the advantages of a mechanical wrench and a digital wrench, is convenient to use and high in efficiency, has the advantages of high-precision measurement, real-time display of torque change values and automatic data storage of the digital wrench, can set and remind the torque values, and can be combined with a locking ring movably sleeved outside a sleeve at the front end of a handle to lock the torque, so that the practicality is greatly improved; in addition, through setting up WIFI module and USB module on the master control circuit board, can increase wireless transmission and wired transmission's function, can see output torsion change figure simultaneously when also making things convenient for external PC.
The foregoing is merely a specific embodiment of the present utility model, and it should be understood by those skilled in the art that any structural design equivalent to the embodiment is included in the scope of the present utility model.
Claims (8)
1. The digital display mechanical torque wrench with the communication function comprises a sleeve (3), an elastic body (2) in the sleeve, a digital display device (4) outside the sleeve and a handle (6) at the rear part of the sleeve, wherein the front part of the elastic body (2) extends out of the front part of the sleeve (3) and is provided with a ratchet head (1), and a main control circuit board (10) is arranged in the digital display device (4); the spring torsion-fixing device is characterized in that a spring torsion-fixing device (8) is arranged in the sleeve (3) and the handle (6), the spring torsion-fixing device comprises a telescopic rod (83), a torsion-fixing spring (81) and a sliding block (82), two ends of the torsion-fixing spring (81) are respectively elastically pushed against the front end of the telescopic rod (83) and the rear end of the sliding block (82), the front end of the sliding block is elastically contacted with a shifting block (9) at the rear end of the elastic body (2), the handle (6) rotates relative to the sleeve (3), and the telescopic rod (83) is driven to axially stretch and move to adjust torsion-fixing elasticity of the torsion-fixing spring (81).
2. The digital display mechanical torque wrench of claim 1, wherein the front end of the handle (6) is provided with a locking ring (5) movably sleeved outside the sleeve (3), and the locking ring is used for fastening the handle (6) to lock the torsion-fixing elastic force.
3. The digital display mechanical torque wrench of claim 1, wherein the spring torque device (8) rotates through the handle (6) to adjust the pressure of the torque spring (81) on the elastic body (2) and the shifting block (9), thereby forming a set torque, when the set torque is reached, the elastic body (2) is disjointed in the process of bending to straightening and resetting, and the disjointing phenomenon synchronously drives the shifting block (9) to rotate to strike the front end of the contacted sliding block (82) to form a click prompt sound.
4. The digital display mechanical torque wrench with the communication function according to claim 1, wherein the digital display device (4) comprises a housing (41) fixed outside the sleeve (3), a liquid crystal display (42), a key (43), a charging interface and a USB port (45) are arranged on the surface of the housing, and a main control circuit board (10) and an internal battery are arranged in the housing (41).
5. The digital display mechanical torque wrench with the communication function according to claim 1, wherein the main control circuit board (10) is provided with a CPU (Central processing Unit) processor (101), an A/D conversion module (102), a storage module (103), a WIFI module (104), a battery management module, a USB module (105), a torque sensor, a signal amplifier and an LED lamp (44).
6. The digital display mechanical torque wrench with communication function according to claim 5, wherein the WIFI module (104) and an external PC form data wireless transmission; the USB module (105) is connected to the PC machine through a data line to form data wired transmission.
7. The digital display mechanical torque wrench with communication function according to claim 4, wherein the main control circuit board (10) is provided with a charging interface of an internal battery.
8. The digital display mechanical torque wrench of the communication according to claim 1, wherein the outer surface of the sleeve (3) and the outer circumferential surface of the front end of the locking ring (5) are provided with scale marks (7) for setting torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679988.XU CN220313198U (en) | 2023-06-29 | 2023-06-29 | Digital display mechanical torque wrench with communication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679988.XU CN220313198U (en) | 2023-06-29 | 2023-06-29 | Digital display mechanical torque wrench with communication function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220313198U true CN220313198U (en) | 2024-01-09 |
Family
ID=89411482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321679988.XU Active CN220313198U (en) | 2023-06-29 | 2023-06-29 | Digital display mechanical torque wrench with communication function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220313198U (en) |
-
2023
- 2023-06-29 CN CN202321679988.XU patent/CN220313198U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111136606B (en) | Tilt compensation torque-angle wrench | |
| TW200609501A (en) | Tightening torque measuring unit and torque indicating tightening device | |
| CN220313198U (en) | Digital display mechanical torque wrench with communication function | |
| CN207534718U (en) | A kind of aeroengine rotor stay-bolt for monitoring pretightning force synchronizes device for screwing up | |
| CN205835126U (en) | A kind of intelligence moment of torsion sleeve | |
| US7284451B2 (en) | Dynamometer tool, in particular a torque wrench, and a method of detecting a break in mechanical equilibrium during tightening to torque | |
| CN201573150U (en) | Screwdriver capable of displaying input torsion | |
| CN200946502Y (en) | Rod type monitoring indicator | |
| CN2100289U (en) | Automatic display dynamometer wrench | |
| CN207171897U (en) | A kind of anti-torque-indicating wrench of falling of novel high-altitude operation | |
| CN206583586U (en) | A kind of portable rigidity data measurement and processing system | |
| CN211163732U (en) | Wireless digital display torque wrench | |
| CN212620574U (en) | Distance measuring device | |
| CN211163733U (en) | Preset torque wrench | |
| CN210307574U (en) | Torque force display assembly of hydraulic wrench | |
| CN208091808U (en) | A kind of secondary small line terminal strength testing tool of electric system | |
| CN207585835U (en) | Hand-held torque calibrator | |
| CN208567713U (en) | A kind of novel and multifunctional hand-held measurement device | |
| CN113068445B (en) | Method and device for measuring tension of steel cable through handheld digital display | |
| CN211023053U (en) | Torque wrench for femur neck hollow screw | |
| CN101879709A (en) | Hand tool capable of automatically and correspondingly clamping | |
| CN101417671A (en) | Automobile steering wheel steering force-steering angle detector | |
| CN208076073U (en) | A kind of digital contact holding tension gauge | |
| CN112629750A (en) | Hand-held torque analyzer | |
| CN101750585A (en) | Measuring device with battery electric power displaying function and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |